TITLE: FUSELAGE - FORWARD FUSELAGE EXTERNAL INSPECTIONS. REVISION: 1 DATE: 18-MAY-2004 ACTION Insert Revision 1 in front of Original Issue. Original Issue can be removed upon issue of a supersedure Airworthiness Directive replacing UKCAA AD 007-06-2003. NOTE: Inspections carried out in accordance with original issue of this Inspection Service Bulletin satisfy the requirements of this issue of the Bulletin. Therefore, no additional inspections required until next scheduled repeat inspection. REASON ISB.53-167:- Page 1 - para.1.D: Para. ’Operators are advised.....etc.’ added. Op.(1) changed. Page 2 - para.1.F: Inspection 30 manhours, was 40. Total manhours 32, was 42. para.1.J: Reference to ’Non Destructive Test Manual NTM 53-10-12’ - deleted. Page 3: Para.2.B.(2) - revised. Para.2.B.(3) - deleted. ISB.53-167ap2 (Appendix 2):- Re-written. ISB.53-167ap3 (Appendix 3):- Deleted. BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland.
INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION SERVICE BULLETIN No.ISB.53-167 DATE: 27-JUN-2003

Date: 27-JUN-2003 REVISION TRANSMITTAL SHEET ISB.53-167 Revision: 1 18-MAY-2004 Page 1 of 2 Printed in EnglandThis Page Is Intentionally Left Blank. INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT TRANSMITTAL FOR INSPECTION SERVICE BULLETIN REVISION SERVICE BULLETIN No.ISB.53-167

Date: 27-JUN-2003 REVISION TRANSMITTAL SHEET ISB.53-167 Revision: 1 18-MAY-2004 Page 2 of 2 Printed in EnglandTITLE: FUSELAGE - FORWARD FUSELAGE EXTERNAL INSPECTIONS. 1.Planning information A.Effectivity (1) Aircraft Aircraft affected by this inspection are defined below :- All BAe 146 100, 200, 300 Series All AVRO 146-RJ70, RJ85, RJ100 Series
B.Reason Evidence of cracking has been reported along the edges of the chemi-etched pockets in the front fuselage canopy skin panels adjacent to the butt joint forward of frame 19. C.Description It is necessary to perform an external eddy current inspection to locate cracks in accordance with Non Destructive Test Manual NTM 53-10-12 and Appendix No.2 of this Bulletin. D.Compliance Operators are advised that this Service Bulletin is the subject of UK Civil Aviation Authority Airworthiness Directive consultation. (1) For the BAe 146 aircraft, perform the external eddy current inspections of the front fuselage skin panels detailed in para.2.B using the inspection instructions detailed in ISB.53-167ap2 Appendix 2 as follows:- (a) Initially within 4,000 landings from initial issue of this bulletin orat 16,000 landings total, whicheveris the later. (b) Repeat at intervals of 8,000 landings. (2) For the AVRO-RJ aircraft, perform the external eddy current inspections of the front fuselage skin panels detailed in para.2.B using the inspection instructions detailed in ISB.53-167ap2 Appendix 2 as follows:- (a) Initially within 2,000 landings from initial issue of this bulletin orat 10,000 landings total, whicheveris the later. BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland.
MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in England(b) Repeat at intervals of 4,000 landings. E.Approval The technical information contained in this document has been approved under the authority of JAA Design Organization Approval No.CAA.JA.02034. F.Manpower Man-hours per aircraft Preparation 2-00 Inspection 30-00 Total Man-hours 32-00 G.Materials - cost and availability Not applicable. H.Tooling - cost and availability Not applicable. I.Weight and balance Not applicable. J.References Not applicable. K.Publications affected Not applicable. L.Electrical load data Not applicable. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in England2.Accomplishment instructions A.Preparation (1) Observe appropriate safety precautions in the Aircraft Maintenance Manual (AMM). B.Inspection (1) Perform an Eddy Current Inspection in accordance with logic diagram Drawing No.1 for BAe 146 aircraft or logic diagram Drawing No.2 for Avro 146-RJ aircraft in the areas detailed in Drawing No.3. (2) Referto Appendix 2 (ISB.53-167ap2) forInspection procedures forNose Skin Panels and Canopy Roof Skins. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in EnglandLOGIC DIAGRAM - BAE 146 AIRCRAFT DRAWING 1. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in EnglandLOGIC DIAGRAM - AVRO 146-RJ AIRCRAFT DRAWING 2. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in EnglandAREAS FOR INSPECTION (SHADED) DRAWING 3. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in EnglandC.Terminating action (1) There is no Terminating Action at present. D.Documentation (1) Report findings, including nil defects, using attached inspection report sheet to:- CustomerLiaison, CustomerSupport (Building 37), BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayr, KA9 2RW, Scotland. FAX: +44 (0) 1292 675432 (2) Record the accomplishment of this Inspection in the aircraft’s technical records. E.Closing Action Not applicable. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in England3.Material information Not applicable. MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in England

### APPENDIX 1 1.INSPECTION REPORT A.Complete and return this form as detailed

OPERATOR: AIRCRAFT REGISTRATION: CONSTRUCTORS NUMBER: FLIGHT HOURS: LANDINGS: DATE INSPECTION PERFORMED: FINDINGS:

To: CustomerLiaison, CustomerSupport (Building 37), BAE SYSTEMS (Operations) Limited, Prestwick International Airport, Ayr, KA9 2RW, Scotland. Fax + 44 (0) 1292 675432 e-mail raengliason@baesystems.com MODIFICATION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT MOD. INSPECTION

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Printed in England